Question: what is spouse of Booker T.Washington that is end time is 1884-0-0?
Paraphrase: Which spouse divorced Booker T. Washington in 1884?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q319871 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1884')) }